Please show formula or rationale

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Problem statement. Wood County Hospital consumes on average 500 boxes of bandages per week. The weekly consumption follows a normal distribution, with standard deviation of the weekly consumption being 100 boxes. The resupply (delivery) lead-time is 4 weeks. The purchasing price of bandages is $70 per box. The cost of processing and placing an order is $60, and the cost of holding one box in inventory for a year is 15% of its purchasing price. Assume 52 weeks per year. The manager uses ROP (continuous review) policy to manage inventory, and sets 97% service level. Answer the following questions. Question 1 2 pts The manager wants to optimize the costs related to the cycle inventory, by setting Q=EOQ. The order quantity in all orders should be: Question 2 2 pts The safety stock needed to meet the required service level is: Question 3 1 pts The reorder point (ROP) is: Question 4 1 pts The average inventory (cycle inventory and safety stock) level is